How to pass over ownership/control of my S Corp

[Alfred Bell]

Have an SCorp that I use for real estate projects. Single owner corp, no employees. If something happens to me my wife won't have access to the corp or its assets or bank account. I have a POA that allows her to conduct the business of the corp if I become sick or incapacitated. But for death... would it be acceptable for me to execute a notarized document between us like a "Designation of Successor Shareholder" wherein I declare that in the event of my death that she is deemed the Successor Shareholder of 100% of my SCorp's stock and entitled to all rights and privileges that such a position entails? Will this allow her to access bank account, sell off any assets, dissolve corp, etc?